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Finding the Third Proportional to 921 and 1,364

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Solution

The third proportional to 921 and 1,364 is: 2,020.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    921 : 1,364 = 1,364 : x
  2. Step 2: Convert to fraction form
    921/1,364 = 1,364/x
  3. Step 3: Cross multiply
    921x = 1,364 × 1,364
  4. Step 4: Simplify right side
    921x = 1,860,496
  5. Step 5: Solve for x
    x = 1,860,496/921
  6. Step 6: Final answer
    x = 2,020.08

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Why These Related Problems?

These problems maintain the same ratio (1.48) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.